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Old 01-10-2004, 12:17 AM   #1
LIQUIDSK8S
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Default STI swap HELP

Ahhhhhhhhhhhhhhh, im dying here. Been without my car for almost three months.

Nobody i talk to can help me get this stupid thing wired up. Ive called lachute and rallispec, and when i ask for a wiring diagram they send me sheets with all the pinouts. What the hell is that, its not a diagram so dont call it one.

I need to find out if anyone knows how to do the conversion, if they know anyone that does, and if theres anyone in south florida that knows how to do this or has the info on how to do it.

I just want to get this thing done, its really getting annoying how nobody has a clue how to do this or can tell me how to .

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Old 01-10-2004, 04:10 AM   #2
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what are you swaping? a gdb sti motor into your 2002 wrx? The wiring should consist of about 7 wires for avcs only. and i believe switching a pin here and there. Super Street has an article about it.
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Old 01-10-2004, 05:16 AM   #3
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Default Re: STI swap HELP

Quote:
Originally posted by LIQUIDSK8S
Nobody i talk to can help me get this stupid thing wired up. Ive called lachute and rallispec, and when i ask for a wiring diagram they send me sheets with all the pinouts. What the hell is that, its not a diagram so dont call it one.

do you think they are going to send you all of their hard work for FREE?

there is a reason why they are a business, and that reason is to do swaps. now since you are doing a swap on your own there is no reason for them to send you all of their info on doing a swap.

and those diagrams should be enough to figure everything out.

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Old 01-10-2004, 01:40 PM   #4
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the swap should be cake if you're swapping a gdb motor into gda.
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Old 01-10-2004, 02:18 PM   #5
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Its a brand new v.8 JDM STI motor going into a 02 wrx, and the pin out sheets they gave me are not enough, enough to take forever to figure out.

I have a porsche race shop working on this and they said the pin out sheets are useless, they are not diagrams.

Also lachute said that those are all the info they have,, and thats all there techs use. The problem is, there techs do this so much that they dont need a diagram to do it. If youve never done it before a pin out sheet is garbage.

Also the v.8 motor requires less wires for the avcs then the v.7. One of the problems we have is that when using the wrx engine harness as lachute said we should, we run into the problem of having extra plugs etc, extra sensors etc etc etc and we need to know what to do with them.

-John
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Old 01-10-2004, 03:35 PM   #6
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Quote:
Originally posted by LIQUIDSK8S
Its a brand new v.8 JDM STI motor going into a 02 wrx, and the pin out sheets they gave me are not enough, enough to take forever to figure out.

I have a porsche race shop working on this and they said the pin out sheets are useless, they are not diagrams.

Also lachute said that those are all the info they have,, and thats all there techs use. The problem is, there techs do this so much that they dont need a diagram to do it. If youve never done it before a pin out sheet is garbage.

Also the v.8 motor requires less wires for the avcs then the v.7. One of the problems we have is that when using the wrx engine harness as lachute said we should, we run into the problem of having extra plugs etc, extra sensors etc etc etc and we need to know what to do with them.

-John

Subiekid is right thies shops will not give you the diagrams they they spent months and months trying to work out. I wouldnt if I was in thier place, and you shouldnt expect them to. Try i speed, and www.spdusa.com but I dont think they will give you more then you have....


edit: AZScoobie had a thread about his shop doing one too...

Last edited by totoherbs; 01-10-2004 at 03:44 PM.
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Old 01-10-2004, 04:21 PM   #7
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dude for the last time. this swap is the easiest available. PM FJP on the board, he recently did an s202 swap. Find the super street article, it outlines everything you need to do the swap.
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Old 01-10-2004, 06:28 PM   #8
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Wiring is not the easiest thing, its actually quite difficult. Its not as straightforward seing as how i dont have the jdm harnesses for the swap, rather i am using the wrx harnesses(engine and wiring etc).

Without the proper diagrams it would take forever to wire it together. We need to know which wires are needed and which ones are not needed, its not as straightforward as you would like to believe.
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Old 01-10-2004, 06:51 PM   #9
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Quote:
Originally posted by LIQUIDSK8S
seing as how i dont have the jdm harnesses for the swap, rather i am using the wrx harnesses(engine and wiring etc).
That's a crying shame because I consider the engine harness almost mandatory. In that case, yes, you will need the real wiring diagrams. I have the diagrams for the USDM STi, but I don't know how similar they really are. You need to get ahold of somebody at a Japanese dealership and get the FSM for you.

-Jon
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Old 01-10-2004, 09:19 PM   #10
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Ya its quite the dilema. Hopefully i can get some more info from lachute, the plan is to take photos of all the wires we had questions about in order to recieve specific answers which lachute agreed to help on, so thats good news i guess.
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Old 01-10-2004, 09:41 PM   #11
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The problem is some of the stuff on the V8 engine is not the same as the V7 ones. Like the power steering pump, alternator, etc. So the plugs are different. I have V8 AVCS heads and the wiring for the AVCS is exactly the same as the V7. I just wired it and got it working today. Here is the absolute easiest thing you can do.

A) Find a V7 STI engine harness. Replace your V8 engine harness with that one. Alternatively, use your WRX harness and wire the AVCS stuff outside the plugs.

B) Replace the parts where the plugs don't match up with stuff off your 02 WRX. Like the power steering pump and alternator.

You might be able to get an exact answer to what needs to be done from dug-e-fresh on the board, as he did a V8 RA swap some time ago.

Last edited by dwx; 01-10-2004 at 09:47 PM.
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Old 01-11-2004, 10:10 PM   #12
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Lachute said they never have used the STI JDM harnesses so i guess ill stick with the wrx harnesses. Hopefully this diagram i found for a v.7 will help out becouse they are similar for the most part with a few differences. Anyways ya this is annoying but whatever, murphys law right .
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Old 01-11-2004, 10:19 PM   #13
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The ONLY difference between the V7 harness and the WRX harness is the AVCS plugs and the lack of TGV plugs. That's it. You don't need a wiring diagram because there is nothing to wire except the AVCS, and that info is readily available, as lots of people have done it. The information on how to wire the AVCS stuff can be found on wrxworld.com or ds1motorsports.com (if it comes back up anytime soon).
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Old 01-11-2004, 11:44 PM   #14
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Quote:
Originally posted by dwx
The ONLY difference between the V7 harness and the WRX harness is the AVCS plugs and the lack of TGV plugs. That's it. You don't need a wiring diagram because there is nothing to wire except the AVCS, and that info is readily available, as lots of people have done it. The information on how to wire the AVCS stuff can be found on wrxworld.com or ds1motorsports.com (if it comes back up anytime soon).
Reread my post carefully. I said i have a v.8 engine, which is differnt when it comes to wiring in comparison with the v.7. So it doesnt make it simple to have the v.7 becouse there are differences with my engine and the v.7. So i need the v.8 diagrams etc, till then i will use the v/7 to try and help decipher all of this crap.
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Old 01-12-2004, 12:31 AM   #15
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Default Harness

LIQUIDSK8S:

I understand your frustration completely having been through the process myself. When you don't have your car and a lot of folks tell you how easy it is, the sphincters tighten some.

My guess is v7 and v8 aren't that different. Try this; get a USDM 04 STi diagram, which is easy, and a comparable WRX diagram for your car, also easy. Now sit down on these long winter evenings and trace every wire and wire color on the engine harnesses for both.

Move and add any wires you need to so the ECU gets the right input. This is actually easy, just very tedious and time consuming. The connectors can be disassembled, if you don't know that.

This is how I made a engine harness from scratch for an imported WRX and a 1.8L engine harness. I can help with the 04 STi diagram if you need that info. Matter of fact, I have the WRX diagram as well. Shoot me a email if you want them.

BTW, I wouldn't count on that buttinski subiekid for any help. He/She in very big on blunt criticism and very little on actual help.

Let me know.

Mike McBride
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Old 01-12-2004, 12:42 AM   #16
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Quote:
Originally posted by MZM
LIQUIDSK8S:

I understand your frustration completely having been through the process myself. When you don't have your car and a lot of folks tell you how easy it is, the sphincters tighten some.

My guess is v7 and v8 aren't that different. Try this; get a USDM 04 STi diagram, which is easy, and a comparable WRX diagram for your car, also easy. Now sit down on these long winter evenings and trace every wire and wire color on the engine harnesses for both.

Move and add any wires you need to so the ECU gets the right input. This is actually easy, just very tedious and time consuming. The connectors can be disassembled, if you don't know that.

This is how I made a engine harness from scratch for an imported WRX and a 1.8L engine harness. I can help with the 04 STi diagram if you need that info. Matter of fact, I have the WRX diagram as well. Shoot me a email if you want them.

BTW, I wouldn't count on that buttinski subiekid for any help. He/She in very big on blunt criticism and very little on actual help.

Let me know.

Mike McBride
Doesnt the ver8s have drive by wire.... Wouldnt that make them very different from the ver 7s? Someone from axis( I think ) talked about changing the ver 8s motor harness to a ver7 to make it easyer....
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Old 01-12-2004, 01:25 AM   #17
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Quote:
Originally posted by LIQUIDSK8S
Reread my post carefully. I said i have a v.8 engine, which is differnt when it comes to wiring in comparison with the v.7. So it doesnt make it simple to have the v.7 becouse there are differences with my engine and the v.7. So i need the v.8 diagrams etc, till then i will use the v/7 to try and help decipher all of this crap.
And I'm telling you it's not that different, unless you have 2.5L US STI engine, then there are more differences. If it's a V8 then it's the same damn thing as a V7 and/or WRX engine, except for a couple plugs. The cam sensors, crank sensor, etc. are all the same. AVCS sensors/solenoids are the same. I'm running V8 heads right now using a V7 harness. It all works great, including AVCS.

There is very little to the actual engine harness, it's very simple in relation to the other wiring harnesses in the car, everything has a unique plug. It absolutely baffles me (and others) what you are having trouble with. Look at the WRX harness, look at the engine connectors, match everything up, see what's different. You are better served just replacing the parts that don't match with things off your WRX engine than trying to make the V8 parts work with a WRX harness. If you don't have the plugs it's going to be a hack job.

Only the US 2.5 turbo engines are drive by wire. The JDM V8 motors are not. If it's a US STI engine then there may be a number of different plugs for the drive by wire system, different plugs for the side feed injectors, among other things.


edit: Ok I reread that you are using a JDM V8 motor. Really, installing that motor and getting it running is a weekend job. I'm sorry you or whoever is doing the work doesn't have the knowledge to complete it.
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Old 01-12-2004, 02:19 AM   #18
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Quote:
Originally posted by dwx
And I'm telling you it's not that different, unless you have 2.5L US STI engine, then there are more differences. If it's a V8 then it's the same damn thing as a V7 and/or WRX engine, except for a couple plugs. The cam sensors, crank sensor, etc. are all the same. AVCS sensors/solenoids are the same. I'm running V8 heads right now using a V7 harness. It all works great, including AVCS.

There is very little to the actual engine harness, it's very simple in relation to the other wiring harnesses in the car, everything has a unique plug. It absolutely baffles me (and others) what you are having trouble with. Look at the WRX harness, look at the engine connectors, match everything up, see what's different. You are better served just replacing the parts that don't match with things off your WRX engine than trying to make the V8 parts work with a WRX harness. If you don't have the plugs it's going to be a hack job.

Only the US 2.5 turbo engines are drive by wire. The JDM V8 motors are not. If it's a US STI engine then there may be a number of different plugs for the drive by wire system, different plugs for the side feed injectors, among other things.


edit: Ok I reread that you are using a JDM V8 motor. Really, installing that motor and getting it running is a weekend job. I'm sorry you or whoever is doing the work doesn't have the knowledge to complete it.
The guy im working with does porsche race cars every day so he knows his way around cars. The only thing is, hes never done a swap with an STI engine so its all new to him, thus his needing the diagrams.

We have a few sensors on the sti that the wrx didnt have(wires etc) and vice versa. We transfered the wrx harness onto the sti and we are left over with quite a few plugs that do not plug into anything etc etc etc thus our dilema.

I talked with lachute and they confirmed that there are differences between the v.7 and v.8 jdm engines, with a few pins being different etc. Otherwise they are the same for the most part which is why i think the v.7 diagram will help out a lot .

We matched everything up etc and found the things that are different, the question is, what the heck do we do with the things that are different. I can get more in depth on monday when i go get exact info etc with photos of the wires we are concerned about.
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Old 01-12-2004, 11:28 AM   #19
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i hope you're not paying this guy. because it seems like you're doing most of the work.
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Old 01-12-2004, 11:53 AM   #20
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Hey,
If you want to get a hold of the JDM harness there was one for sale in the classifieds last month. I think it was Gruppe-S that had it and they basically couldn't give the thing away!!! Do some searching in the classifieds and you may find a simpler solution to this problem. I am not sure it was Gruppe-S, but I am sure it was one of our vendors. I hope this may help...
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Old 01-12-2004, 12:20 PM   #21
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East Coast Scooby was selling the harness for a couple hundred dollars.
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Old 01-12-2004, 02:28 PM   #22
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But lachute said not to use the jdm harness, so im gonna stick with the wrx harness.

Im paying, but hes doing all the work, im just doing the research an asking the questions he has etc etc.
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Old 01-14-2004, 08:17 AM   #23
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The pinout is your DIAGRAM !!! You know what wire does what. You will have to make your own diagram. Honestly, if it can not be figured out from what I sent you, this swap should not be attempted !!!!

I recieved my computer back today .. finally, and am retyping all the pinouts for you on an excel sheet for a second time. I will try and get it finished today, but I am very busy with a new project coming up for everyone !!! Not yet released on the market by anyone !!

Regards,
Mark
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Old 01-14-2004, 11:36 AM   #24
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Quote:
Originally posted by DMS North America
The pinout is your DIAGRAM !!! You know what wire does what. You will have to make your own diagram. Honestly, if it can not be figured out from what I sent you, this swap should not be attempted !!!!

I recieved my computer back today .. finally, and am retyping all the pinouts for you on an excel sheet for a second time. I will try and get it finished today, but I am very busy with a new project coming up for everyone !!! Not yet released on the market by anyone !!

Regards,
Mark
Pinouts are not a diagram, they are pinouts. They said they could figure it out eventually but that it would take awhile which costs$. Thankyou for the help though, i really do appreciate it. My guy just needed the diagram to confirm what gets eliminated/converted from the wrx harness to make the thing work.

I think the tgv's are the four things, one on each end of the intake manifold, this is on the wrx but not on the sti, so our guess is that we just eliminate those wires becouse we have no need for them.

Then we have a few other cords we want to make sure about, and i can post pics of them later today when i get a chance.

Thanks for the help,
-John
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Old 01-15-2004, 12:36 AM   #25
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